Joshua 22:27

27 but that this may be a witness between you and us, and between our posterity after us, that we may do service to the Lord before him, with our burnt-offerings and our meat-offerings and our peace-offerings: so your sons shall not say to our sons, hereafter, Ye have no portion in the Lord.

Joshua 22:27 Meaning and Commentary

Joshua 22:27

But [that] it [may be] a witness between us and you, and our
generations after us
That we are one people, worship one God, and serve at one altar, of which this built was a resemblance, and would put them in mind of it:

that we might do the service of the Lord before him;
in the tabernacle, and at the altar, in the place where he had chosen to put his name and dwell:

with our burnt offerings, and with our sacrifices, and with our peace
offerings;
to be brought at stated times, or as occasion required:

that your children may not say to our children, in time to come, ye
have no part in the Lord;
nor right to his altar, and so forbid them offering their sacrifices on it; or

``have no part in the Word of the Lord,''

as the Targum; the Messiah, whose sacrifice was typified by the sacrifices of the legal dispensation, and all such, who offered theirs in the faith of that, had a part in it, and their sins were expiated by it.

Joshua 22:27 In-Context

25 Whereas the Lord has set boundaries between us and you, even Jordan, and ye have no portion in the Lord: so your sons shall alienate our sons, that they should not worship the Lord.
26 And we gave orders to do thus, to build this altar, not for burnt-offerings, nor for meat-offerings;
27 but that this may be a witness between you and us, and between our posterity after us, that we may do service to the Lord before him, with our burnt-offerings and our meat-offerings and our peace-offerings: so your sons shall not say to our sons, hereafter, Ye have no portion in the Lord.
28 And we said, If ever it should come to pass that they should speak to us, or to our posterity hereafter; then shall they say, Behold the likeness of the altar of the Lord, which our fathers made, not for the sake of burnt-offerings, nor for the sake of meat-offerings, but it is a witness between you and us, and between our sons.
29 Far be it from us therefore that we should turn away from the Lord this day so as to apostatize from the Lord, so as that we should build an altar for burnt-offerings, and for peace-offerings, besides the altar of the Lord which is before his tabernacle.

The Brenton translation of the Septuagint is in the public domain.